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What factors influence arterial blood gas sampling patterns?
Author(s) -
Andrews Tom,
Waterman Heather
Publication year - 2008
Publication title -
nursing in critical care
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.689
H-Index - 43
eISSN - 1478-5153
pISSN - 1362-1017
DOI - 10.1111/j.1478-5153.2008.00275.x
Subject(s) - medicine , arterial blood , oxygenation , oxygen saturation , blood pressure , arterial line , intensive care unit , anesthesia , blood sampling , blood gas analysis , sampling (signal processing) , arterial blood gas analysis , emergency medicine , oxygen , intensive care medicine , chemistry , organic chemistry , filter (signal processing) , computer science , computer vision
Study objective: To investigate if patterns of arterial blood gas (ABG) sampling were influenced by values of fractional inspiratory oxygen (FiO 2 ), partial pressure of carbon dioxide (PCO 2 ), partial pressure of oxygen (PO 2 ) and oxygen saturation (%SaO 2 ). Setting: An intensive care unit (ICU) in a university teaching hospital located in the North of England, UK. Design: A retrospective, descriptive, correlation study based on patient records. Participants: All patients admitted to the ICU for 24 hours or greater and who had an arterial line in situ . Measurements and results: The study included the records of 65 patients consecutively admitted to the ICU. Patients in this study had more blood gases taken than reported elsewhere in the literature. While consistent correlation was found between values of FiO 2 , PCO 2 , PO 2 and %SaO 2 , values of PO 2 were the most consistent. Conclusions: Values of PO 2 are associated with frequency of ABG sampling and to a lesser extent on FiO 2 . Nurses in this study opted to track changes in oxygenation using ABGs despite continuous monitoring of %SaO 2 .